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IPython Interactive Computing and Visualization Cookbook

IPython Interactive Computing and Visualization Cookbook

By : Cyrille Rossant
4.5 (13)
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IPython Interactive Computing and Visualization Cookbook

IPython Interactive Computing and Visualization Cookbook

4.5 (13)
By: Cyrille Rossant

Overview of this book

Intended to anyone interested in numerical computing and data science: students, researchers, teachers, engineers, analysts, hobbyists... Basic knowledge of Python/NumPy is recommended. Some skills in mathematics will help you understand the theory behind the computational methods.
Table of Contents (22 chapters)
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IPython Interactive Computing and Visualization Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Estimating the correlation between two variables with a contingency table and a chi-squared test


Whereas univariate methods deal with single-variable observations, multivariate methods consider observations with several features. Multivariate datasets allow the study of relations between variables, more particularly their correlation or lack thereof (that is, independence).

In this recipe, we will take a look at the same tennis dataset as in the first recipe of this chapter. Following a frequentist approach, we will estimate the correlation between the number of aces and the proportion of points won by a tennis player.

Getting ready

Download the Tennis dataset on the book's GitHub repository at https://github.com/ipython-books/cookbook-data, and extract it in the current directory.

How to do it...

  1. Let's import NumPy, pandas, SciPy.stats, and matplotlib:

    In [1]: import numpy as np
            import pandas as pd
            import scipy.stats as st
            import matplotlib.pyplot as plt
            %matplotlib...

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